Best for: RAG & agent memory
Retrieval engines, vector stores and memory layers. Ranked by AgentPick Score, our 0–100 data score.
Ranking
#1RAGFlow is a leading open-source Retrieval-Augmented Generation (RAG) engine that fuses cutting-edge RAG with Agent capabilities t…
★ 92k · released 14 Oct 2026 · 889 contributors · Apache-2.0The Memory Layer for AI Agents - Drop-in memory infrastructure for AI agents and apps. Context that persists. Built for production…
★ 67k · released 25 Sept 2026 · 414 contributors · Apache-2.0The best-benchmarked open-source AI memory system. And it's free.
★ 60k · released 14 Oct 2026 · 172 contributors · MITHindsight: Agent Memory That Learns
★ 50k · released 13 Oct 2026 · 285 contributors · MITCognee is the open-source AI memory platform for agents. Give your AI agents persistent long-term memory with small models for fre…
★ 32k · released 13 Oct 2026 · 313 contributors · Apache-2.0Search infrastructure for AI
★ 30k · released 14 Oct 2026 · 201 contributors · Apache-2.0📑 PageIndex: Document Index for Vectorless, Reasoning-based RAG
★ 39k · released 12 Oct 2026 · 17 contributors · MITOne portable memory layer for every AI agent: local-first, Markdown-native, user-owned, and self-evolving across apps, tools, and …
★ 13k · released 14 Oct 2026 · 25 contributors · Apache-2.0TencentDB Agent Memory is a team-level memory hub for AI Agents — turning conversations, docs, and code into four reusable memory …
★ 29k · released 13 Oct 2026 · 27 contributors💡 All-in-one AI framework for semantic search, LLM orchestration and language model workflows
★ 13k · released 6 Oct 2026 · 72 contributors · Apache-2.0Self-evolving memory OS for LLM & AI Agents: ultra-persistent memory, hybrid-retrieval, and cross-task skill reuse, with 35.24% to…
★ 12k · released 23 Sept 2026 · 106 contributors · Apache-2.0Incremental engine for long horizon agents 🌟 Star if you like it!
★ 12k · released 6 Oct 2026 · 104 contributors · Apache-2.0Memory library for building stateful agents
★ 7.6k · released 14 Oct 2026 · 81 contributors · AGPL-3.0The retrieval layer for production AI systems. Lightning-fast (<10ms) search without vector databases. Built for browser, edge, on…
★ 798 · released 12 Oct 2026 · 42 contributors · BSD-2-ClauseAgentPick Weekly
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